Cannot Perform Factory Hard Rest - HTC Rezound

Hi all,
I just purchased a HTC Rezound (used). Clean ESN, I have it activated and working fine. It is running the most recent official OTA build from Verizon (last January I believe).
Strangely, I am not able to perform a factory reset on the device to get it back to stock from the previous user. I have tried via the settings menu, and I have tried via the hard reset (power btn + Vol down), neither work. The device just reboots as usual.
I see at the top of the device (when rebooting using hard reset keys) it says it is unlocked, and S-ON. Go easy on me as I am still trying to learn what I will need to do to eventually put ROM's on this device - but anyone have any clues why I can't perform a simply hard reset and succeed? Thanks!

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Dunno what the exact state of the kernel, ROM, etc. is since it is unlocked, perhaps something about that phone's configuration causes it to fail. Try running a RUU just to take all the guesswork out of what the previous owner did to that thing, here is the GB OTA thanks to con247: http://forum.xda-developers.com/showthread.php?p=22045045

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Thank you - does this information give any clues?
Here's what I see:
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that doesnt really help but you should definitely run the RUU it will reset everything

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next
Hi, You will want to read all the great info here on xda about HTC Lock and Unlock. Your goal is to use adb and flash to re-lock it. After it's relocked,
you can run an exe called RUU when it's connected to a computer. I'd recommend using the 2.01.605.11. It will fix all woes, including your ability to
do a reset on it. It's their best Gingerbread version, and compatible with your system.
After you do the RUU, you will be ready for the new ICS coming out SOOOON.

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Yeah, that is on the same build as OTA, may be a custom ROM still, Factory Reset should wipe all RAM data if it is indeed on a stock ROM fine, hmm. Check Settings > Power and make sure Fast Boot is deselected, that may interfere with the reboot process while it resets. Other than checking the recovery in that boot menu you posted for a custom recovery with options there to wipe and reset, try a RUU still is all I got, haha.

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michaelbsheldon said:
Hi, You will want to read all the great info here on xda about HTC Lock and Unlock. Your goal is to use adb and flash to re-lock it. After it's relocked,
you can run an exe called RUU when it's connected to a computer. I'd recommend using the 2.01.605.11. It will fix all woes, including your ability to
do a reset on it. It's their best Gingerbread version, and compatible with your system.
After you do the RUU, you will be ready for the new ICS coming out SOOOON.
Click to expand...
Click to collapse
actually you do not to relock before running a RUU
PhantasmRezound said:
Yeah, that is on the same build as OTA, mag be a custom ROM still, Factory Reset should wipe all RAM data if it is indeed on a stock ROM fine, hmm. Check Settings > Power and make sure Fast Boot is deselected, that may interfere with the reboot process while it resets. Other than checking the recovery in that boot menu you posted for a custom recovery with options there to wipe and reset, try a RUU still is all I got, haha.
Click to expand...
Click to collapse
that would be an option but it would be easier if he reset with an RUU and then learned everything else about modding and flashing himself rather than have it installed for him

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Oh yeah, RUU is definitely easier and learning all the info here in XDA is recommended (should be mandatory for all modding and modded phone owners.) But checking those things are quick solutions to try while waiting for a quarter to a half a gig of RUU data to download lol. I have limited connection speeds and always think laterally while troubleshooting.

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Po1soNNN said:
actually you do not to relock before running a RUU
Click to expand...
Click to collapse
Yes you most certainly do. He has s-on so he has to relock.

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yep he needs to relock and run ruu since he is s-on

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Just to follow up -thank you everyone for helping me get started and solve the problem.
I re-locked and applied the suggested RUU in this thread - all is good now!
THanks!